The Duke Nukem 3D v1.3d CD-ROM had a pretty awesome /GOODIES directory on it. In addition to the Build editor and related modding utilities, it had a bunch of early screenshots and information on three other 3D Realms games in development at the time: Blood, Shadow Warrior and Prey.
These screenshots showcase a very early version of Prey’s custom 3D engine technology, and they came with an outline of the story by Tom Hall:
Prey’s story and character are still in their infancy stages. None of this should be considered final product, just development info. We want to take the step, since the game is about being hunted, of making the character a Native American. The character will be a successful business person or politician, striking against the stereotypes. While a few aspects of Native American culture will be brought into it, it will be as part of fleshing out the character.
You are a successful Native American, fighting for part of what were your ancestral lands. When the ruling goes against you, you pack up your Hummer and head out to the wilderness to contemplate your future and hope for guidance. Suddenly, there is a blinding flash of light, your skin crawls with electricity and you black out. You wake to find yourself in a hostile alien environment. Strange creatures pour out of every crevice of the odd alien architecture, firing weapons of incredible might. You must find out how to defeat them: master the alien weapons, explore the foreboding battlefields to uncover their secrets, and discover what part you will take in this violent new world.
Hall, who in this text file describes himself as “Creative Director/Producer/Designer/etc”, would leave the Prey team and join John Romero at Ion Storm not long after this was written - and the game itself would not see release for another decade.